4种海藻提取液对决明子种子萌发及生长的影响

Effects of 4 Kinds of Seaweed Extracts on Seed Germination and Growth of Catsia tora Linn

以经济海藻的低价值尾水菜为材料来源,常见高价值中药种子决明子为研究对象,探讨不同质量分数(0.05%,0.10%,0.20%,0.40%)的4种海藻(海带、紫菜、裙带菜、龙须菜)提取液对决明子种子发芽势、发芽指数、活力指数、发芽率以及幼苗的鲜质量、株高、叶绿素等指标的影响。结果表明,不同海藻提取液处理对决明子种子萌发及幼苗生长影响不同。随着海藻提取液质量分数的增高,决明子种子萌发指数呈现先增高后降低的趋势;质量分数为0.05%~0.20%的海藻提取液促进种子萌发效果较好。紫菜提取液对于促进决明子种子萌发效果最好,而海带提取液能够显著提高决明子幼苗的株高和根长。

In this study, economic algae was used as material source, and the common high value seeds of traditional Chinese medicine Catsia tora Linn was used as object. Four different mass concentrations extracts(0.05%, 0.10%, 0.20%, 0.40%) of seaweeds(Laminaria japonica, Porphyra yezonsis, Undaria pinnatifida and Gracilaria lemaneiforms) were set to study the seed germination potential, germination index, vigor index, germination rate and the seedling height, root length and Chlorophyll of C. tora Linn. The results showed that different kinds of seaweed extracts had different effects on seed germination and seedling growth of C. tora Linn. With the increase of the concentration of seaweed extract, the germination index of C. tora Linn seed increased firstly and then decreased. The seaweed extracts with a mass concentration of 0.05%—0.20% showed a better effect on C. tora Linn seed germination than other treatments. P. yezonsis extract showed the best effect on improving the seed germination of C. tora seed, while L. japonica extract significantly improved the seedling height and root length of C. tora seedling.